*{
    padding: 0;
    margin: 0 ;
}
.w{
    width: 1200px;
    margin: 0 auto;
    background-color: pink;
}
.box{
    border-bottom: 1px solid gray;
}
.title{
    text-align: center;
}
ul{
    margin: 0;
    padding: 0;
}
.envent{
    height: 50px;
    line-height: 50px;
    text-align: center;
}
.envent button{
    display: block;
    margin: 0 auto;
}
.btnList ul li{
    display: inline-block;
    margin: 5px 10px;
    float: left;
}